Arch bridge in Moggio Udinese

The work concerns the assembly plan of a bridge located in Moggio Udinese, which has a double parallel circular arch structure with calculation span in the axis of supports equal to 74.96m, total length equal to 77.1m, overall width of the roadway. equal to 9.40m, arrow of the arches 14m approx .. The bridge is characterized by a deck which is hung from the arches by means of bar hangers. The deck is made of longitudinal tubular beams and double T crosspieces to support a reinforced concrete slab. The two arches with tubular section are spaced in plan by about 4.6m due to the oblique supports.
First, the lateral segments of the deck beams were mounted, supported by temporary piers placed in the riverbed at the thirds of the span (near the deck joint).

The segment is then erected in the key of the deck and the relative crosspieces. We then proceed with the assembly of the two lateral arch segments supported by a temporary column that stands out from the provisional pile. To close the static scheme, the central segment of arch is then erected. Arch and deck are supported in the provisional phases by saddles suitably shaped and sliding in the longitudinal direction to allow the necessary geometric adjustments.